ZIC4
Zinc finger protein ZIC 4
Also known as: ZIC4_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q8N9L1
- Gene
- ZIC4
- Ensembl
- ENSG00000174963
- Chromosome
- 3
- Canonical length
- 334 aa
- Protein class
- Human disease related genes, Predicted intracellular proteins, Transcription factors
- Subcellular location
- Nucleoplasm,Cytosol
OverviewNCBI Gene
This gene encodes a member of the ZIC family of C2H2-type zinc finger proteins. Members of this family are important during development, and have been associated with X-linked visceral heterotaxy and holoprosencephaly type 5. This gene is closely linked to the gene encoding zinc finger protein of the cerebellum 1, a related family member on chromosome 3. Heterozygous deletion of these linked genes is involved in Dandy-Walker malformation, which is a congenital cerebellar malformation. Multiple transcript variants have been identified for this gene. [provided by RefSeq, Dec 2009]
Canonical amino-acid sequenceUniProt
334 residues, UniProt reviewed canonical sequence.
>Q8N9L1|ZIC4
1 MRYKTSLVMR KRLRLYRNTL KESSSSSGHH GPQLTAASSP SVFPGLHEEP PQASPSRPLN
61 GLLRLGLPGD MYARPEPFPP GPAARSDALA AAAALHGYGG MNLTVNLAAP HGPGAFFRYM
121 RQPIKQELIC KWLAADGTAT PSLCSKTFST MHELVTHVTV EHVGGPEQAN HICFWEECPR
181 QGKPFKAKYK LVNHIRVHTG EKPFPCPFPG CGKVFARSEN LKIHKRTHTG EKPFRCEFEG
241 CERRFANSSD RKKHSHVHTS DKPYTCKVRG CDKCYTHPSS LRKHMKVHGR SPPPSSGYDS
301 ATPSALVSPS SDCGHKSQVA SSAAVAARTA DLSELocalizationUniProt · AlphaFold · HPA
Whether an antibody against ZIC4 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.53
- Highest tissue expression
- 92 nTPM
Expression across tissuesHPA
Tissue
- cerebellum: 92 nTPM
- retina: 4.5 nTPM
- choroid plexus: 2.7 nTPM
- cerebral cortex: 2.2 nTPM
- spinal cord: 2.2 nTPM
- hypothalamus: 1.8 nTPM
Single-cell type
- bergmann glia: 75 nCPM
- brain excitatory neurons: 44 nCPM
- ependymal cells: 20 nCPM
- late spermatids: 19 nCPM
- myonuclei: 19 nCPM
- choroid plexus epithelial cells: 16 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- cerebellum: 154 nTPM
- white matter: 41 nTPM
- medulla oblongata: 34 nTPM
- thalamus: 32 nTPM
- pons: 30 nTPM
- basal ganglia: 23 nTPM
ReferencesPubMed · IEDB
Publications for ZIC4 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.
Reference: AutoantibodyPubMed
10 publications
- The Diagnostic Value of Onconeural Antibodies Depends on How They Are Tested.
2020 · Front Immunol · RCR 5.1 · 78 citations - Stiff person spectrum disorders: An illustrative case series of their phenotypic and antibody diversity.
2020 · J Neuroimmunol · RCR 1.9 · 23 citations - Common Variants Near ZIC1 and ZIC4 in Autopsy-Confirmed Multiple System Atrophy.
2022 · Mov Disord · RCR 1.2 · 15 citations - Autoimmune encephalitis: the first observational study from Iran.
2022 · Neurol Sci · RCR 1.1 · 9 citations - Case of anti-Zic4 antibody-mediated cerebellar toxicity induced by dual checkpoint inhibition in head and neck squamous cell carcinoma.
2020 · BMJ Case Rep · RCR 0.6 · 11 citations
Show 5 more
- Isolated ZIC4 antibodies in paraneoplastic cerebellar syndrome with an underlying ovarian tumor.
2011 · Arch Neurol · RCR 0.5 · 16 citations - Atypical presentation of probable Creutzfeldt-Jakob disease associated with anti-Zic4 antibody: Literature review of neuronal antibodies in Creutzfeldt-Jakob disease.
2018 · Clin Neurol Neurosurg · RCR 0.4 · 8 citations - Antibodies to Zic4 in paraneoplastic neurologic disorders and small-cell lung cancer.
2004 · Neurology · RCR 0 · 2 citations - Follicular lymphoma as a cause of limbic encephalitis associated to anti-Zic4 antibodies.
2023 · Med Clin (Barc) - Prolonged Anti-Zic4 Antibody-Positive Cerebellar Degeneration Following COVID-19 Infection.
2026 · Neuropsychopharmacol Rep
Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.87
- gnomAD pLI
- 0
- gnomAD missense Z
- -0.11
- DepMap mean gene effect
- 0.09
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
Molecular functions
- DNA binding
- DNA-binding transcription factor activity, RNA polymerase II-specific
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- sequence-specific double-stranded DNA binding
- zinc ion binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads ZIC4 as an antibody target. Whether an autoantibody or antibody against ZIC4 could matter depends on whether native ZIC4 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
ZIC4 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label ZIC4 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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